Megan went clothes shopping and bought 2 pairs of flare jeans, 2 camisoles, and 4 t-shirts for $90.00. at the same store, paige bought one pair of flare jeans and 3 t-shirts for $42.50, while kara bought 1 pair of flare jeans, 3 camisoles, and 2 t-shirts for $62.00. determine the price of each clothing item.

If you let j, c, t represent the prices of jeans, camisoles, and t-shirts, respectively, the three purchases can be described by ...
  2j +2c +4t = 90.00
  1j +0c +3t = 42.50
  1j +3c +2t = 62.00

It is convenient to let a calculator solve these equations. It can tell you the row-reduced matrix equations are ...
  [[1 0 0 24.5]
    [0 1 0 8.5 ]
    [0 0 1 6   ]]
which means
  flare jeans cost $24.50
  camisoles cost $8.50
  T-shirts cost $6.00